Finch experiment for limiting the password bubble annoyance.

chrome/browser/ui/passwords/password_bubble_experiment_unittest.cc

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/ui/passwords/password_bubble_experiment.h"
+
+#include "base/files/scoped_temp_dir.h"
+#include "base/metrics/field_trial.h"
+#include "base/prefs/pref_service.h"
+#include "base/strings/string_number_conversions.h"
+#include "chrome/common/pref_names.h"
+#include "chrome/test/base/testing_profile.h"
+#include "components/variations/entropy_provider.h"
+#include "components/variations/variations_associated_data.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+const int kTimeSpanDays = 2;
+const int kTimeSpanThreshold = 3;
+const int kProbabilityFakeSaves = 0;
+const int kProbabilityHistory = 10;
+
+void SetupTimeSpanExperiment() {
+  ASSERT_TRUE(base::FieldTrialList::CreateFieldTrial(
+      password_bubble_experiment::kExperimentName,
+      password_bubble_experiment::kGroupTimeSpanBased));
+  std::map<std::string, std::string> params;
+  params[password_bubble_experiment::kParamTimeSpan] =
+      base::IntToString(kTimeSpanDays);
+  params[password_bubble_experiment::kParamTimeSpanNopeThreshold] =
+      base::IntToString(kTimeSpanThreshold);
+  ASSERT_TRUE(variations::AssociateVariationParams(
+      password_bubble_experiment::kExperimentName,
+      password_bubble_experiment::kGroupTimeSpanBased,
+      params));
+}
+
+void SetupProbabilityExperiment() {
+  ASSERT_TRUE(base::FieldTrialList::CreateFieldTrial(
+      password_bubble_experiment::kExperimentName,
+      password_bubble_experiment::kGroupProbabilityBased));
+  std::map<std::string, std::string> params;
+  params[password_bubble_experiment::kParamProbabilityFakeSaves] =
+      base::IntToString(kProbabilityFakeSaves);
+  params[password_bubble_experiment::kParamProbabilityInteractionsCount] =
+      base::IntToString(kProbabilityHistory);
+  ASSERT_TRUE(variations::AssociateVariationParams(
+      password_bubble_experiment::kExperimentName,
+      password_bubble_experiment::kGroupProbabilityBased,
+      params));
+}
+
+} // namespace
+
+class PasswordBubbleExperimentTest : public testing::Test {
+ public:
+  void SetUp() override {
+    ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
+    profile_.reset(new TestingProfile(temp_dir_.path()));
+
+    field_trial_list_.reset(new base::FieldTrialList(
+        new metrics::SHA1EntropyProvider("foo")));
+    variations::testing::ClearAllVariationParams();
+  }
+
+  PrefService* prefs() { return profile_->GetPrefs(); }
+
+ private:
+  base::ScopedTempDir temp_dir_;
+  scoped_ptr<TestingProfile> profile_;
+  scoped_ptr<base::FieldTrialList> field_trial_list_;
+};
+
+TEST_F(PasswordBubbleExperimentTest, TimeSpan) {
+  SetupTimeSpanExperiment();
+
+  EXPECT_TRUE(password_bubble_experiment::ShouldShowBubble(prefs()));
+  // Don't save password enough times.
+  for (int i = 0; i < kTimeSpanThreshold; ++i) {
+    password_manager::metrics_util::UIDismissalReason reason = i % 2 ?
+        password_manager::metrics_util::NO_DIRECT_INTERACTION :
+        password_manager::metrics_util::CLICKED_NOPE;
+    password_bubble_experiment::RecordBubbleClosed(prefs(), reason);
+  }
+  EXPECT_FALSE(password_bubble_experiment::ShouldShowBubble(prefs()));
+
+  // Save password many times. It doesn't bring the bubble back while the time
+  // span isn't over.
+  for (int i = 0; i < 2*kTimeSpanThreshold; ++i) {
+    password_bubble_experiment::RecordBubbleClosed(
+        prefs(),
+        password_manager::metrics_util::CLICKED_SAVE);
+  }
+  EXPECT_FALSE(password_bubble_experiment::ShouldShowBubble(prefs()));
+}
+
+TEST_F(PasswordBubbleExperimentTest, TimeSpanOver) {
+  SetupTimeSpanExperiment();
+
+  base::Time past_interval =
+      base::Time::Now() - base::TimeDelta::FromDays(kTimeSpanDays + 1);
+  prefs()->SetInt64(prefs::kPasswordBubbleTimeStamp,
+                    past_interval.ToInternalValue());
+  prefs()->SetInteger(prefs::kPasswordBubbleNopesCount, kTimeSpanThreshold);
+  // The time span is over. The bubble should be shown.
+  EXPECT_TRUE(password_bubble_experiment::ShouldShowBubble(prefs()));
+  EXPECT_EQ(0, prefs()->GetInteger(prefs::kPasswordBubbleNopesCount));
+
+  // Set the old time span again and record "Nope". The counter restarts from 0.
+  prefs()->SetInt64(prefs::kPasswordBubbleTimeStamp,
+                    past_interval.ToInternalValue());
+  password_bubble_experiment::RecordBubbleClosed(
+      prefs(), password_manager::metrics_util::CLICKED_NOPE);
+  EXPECT_TRUE(password_bubble_experiment::ShouldShowBubble(prefs()));
+  EXPECT_EQ(1, prefs()->GetInteger(prefs::kPasswordBubbleNopesCount));
+}
+
+TEST_F(PasswordBubbleExperimentTest, Probability) {
+  SetupProbabilityExperiment();
+
+  EXPECT_TRUE(password_bubble_experiment::ShouldShowBubble(prefs()));
+  // Don't save password enough times.
+  for (int i = 0; i < kProbabilityHistory; ++i) {
+    password_manager::metrics_util::UIDismissalReason reason = i % 2 ?
+        password_manager::metrics_util::NO_DIRECT_INTERACTION :
+        password_manager::metrics_util::CLICKED_NOPE;
+    password_bubble_experiment::RecordBubbleClosed(prefs(), reason);
+  }
+  EXPECT_FALSE(password_bubble_experiment::ShouldShowBubble(prefs()));
+
+  // Save password enough times.
+  for (int i = 0; i < kProbabilityHistory; ++i) {
+    password_bubble_experiment::RecordBubbleClosed(
+        prefs(),
+        password_manager::metrics_util::CLICKED_SAVE);
+  }
+  EXPECT_TRUE(password_bubble_experiment::ShouldShowBubble(prefs()));
+}